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Thread: How long will this universe last?

  1. #1 How long will this universe last? 
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    Look up into the night sky. Asking anyone, it is quite bright, glorious and wonderful. Trillions of stars, all that are millions of miles across. Giant, burning balls of gas that shine bright enough to be visable from hundreds of lightyears away. These stars, as does pretty much everything in out universe, will die. Even though they average living three billion years at a time, they do die. Our very sun, will die. But this time is in the very, very far future. A sun uses fuel to stay alive. This fuel is in huge amounts in each massive star, and is not a renewable source. The stardust released from dead stars creates new stars, and so on. But, in trillions, of trillions of years, the valuable feul will be in a shortage. Stars will shrink to only a trillion. Then a million. Then a thousand. And where is it to go from that? The last stars will fliker out, leaving one last star. Of course we will most likely be gone at this time, but once that one star dies, and the universe goes completly black, what will be of our very dimension? Will life be able to flourish? Will light be even able to live? What will become of the rest of eternity, just nothing? A giant, nearly 3 septillion miles across area of nothing but black holes and space? What do you think?


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  3. #2  
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    I think that your use of large fonts and bold text makes you look ridiculous.

    You cannot see trillions of stars when you look up. The actual amount is a few thousand, and it's all relatively local members of the Milky Way.

    The sun will last about 10 billion years, we're about halfway through that (though it will continue as a white, then black dwarf for far longer than that).

    Based on the latest information we have, the Universe will continue to expand, and the stars will flicker out, and there will be blackness. Is there a scientific point of discussion to your post?

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    "A giant, nearly 3 septillion miles across area of nothing but black holes and space? What do you think?"

    The predictions go further than that - in the far distsant future all black holes will have boiled off and there will be nothing but a sea of photons.
    This is the cosmic heat death - a period that will form the vast majority of the history of this universe - there will be no sensation of time passing
    so this phase could be regarded as taking no time at all - I refer you to 'Cycles of time' - Roger Penrose [ who was Rouse-Ball professor of Mathematics at Oxford university ]
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    i believe that all the stars will eventually turn into black holes, or be consumed by black holes. when there are no stars left, they will be attracted to the larger black hole in the center of the galaxy. then these larger black holes will consume each other until they become one super-black hole
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    Your belief is probably wrong. Matter will be too spread out to all be absorbed in black holes
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    Quote Originally Posted by billy joe View Post
    when there are no stars left, they will be attracted to the larger black hole in the center of the galaxy.
    Huh? If there are no stars, how can they be attracted to anything?

    Also, you seem to think that black holes are capable of reaching out grabbing stars any distance away and pulling them in. The same laws of gravity apply; if the star is sufficiently far away and moving in such a way that it is not currently falling towards the black hole, then there is no reason to think it will in future. There are a small number of stars in orbit around the black hole at the center of our galaxy, for example. They are not suddenly going to get sucked in.

    then these larger black holes will consume each other until they become one super-black hole
    These black holes will be so far apart, I doubt they will consume each other.
    ei incumbit probatio qui dicit, non qui negat
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    Good point Strange. Many people seem to have the misconception that black holes are like some sort of cosmic Mega Maid vacuum cleaner. Unless you are in VERY close proximity, they are just a mass like any other, and orbiting objects follow the same Keplerian, Newtonian, and Einsteinian laws they do everywhere else.
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    What about planets? Will the chunk of rock we call earth continue to exist in the dark space of the distant future? If a computer was built, containing a matrix-like world(or city) simulation, could it use some form of energy to continue operating when the sun and all stars are no longer in reaction? The earth will still be moving throught space can some type of energy be obtained, even if its a trickle, (each second of activity in the matrix world represents a thousand years of accumulated trickle energy in the real dark world)?
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    As you read this, the Universe is EXACTLY half way through its period of existence. Curiously enough, nine hundred fifty septemdecillion years from this date at precisely 2:47:23 AM GMT, it will again be EXACTLY half way through its period of existence.

    Before something can change, before something can act or be acted upon, it must exist.
    This is a rather simple axiom, logically self-evident since any who might dissent must believe in things that don't exist. Existence in the absence of change is possible, change in the absence of existence is not. The fact that existence is required in order for change to occur explicitly means cause and effect is a function of (derived from) the phenomenon of existence - NOT the reverse.

    Time is a function of existence, existence is not a function of time. The universe didn't begin. It won't end. Eternity is not a relative period of time and there is always as much time looming before us as there was behind.

    ALSO, I can logically prove every point in the cosmos is its center. Interested?
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    Quote Originally Posted by THoR View Post
    As you read this, the Universe is EXACTLY half way through its period of existence. Curiously enough, nine hundred fifty septemdecillion years from this date at precisely 2:47:23 AM GMT, it will again be EXACTLY half way through its period of existence.
    Got any proof for that assertion? (Rhetorical question)


    ALSO, I can logically prove every point in the cosmos is its center. Interested?
    That is already well known in cosmology...
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    Quote Originally Posted by MeteorWayne View Post
    Quote Originally Posted by THoR View Post
    As you read this, the Universe is EXACTLY half way through its period of existence. Curiously enough, nine hundred fifty septemdecillion years from this date at precisely 2:47:23 AM GMT, it will again be EXACTLY half way through its period of existence.
    Got any proof for that assertion? (Rhetorical question)
    OF COURSE...but it requires an extraordinarily well build stopwatch with an inexhaustable source of power.
    I HAVE the proof...if you've got the time.

    Seriously, though, time is the measurement of change and change is a function of existence. Existence if not temporal...time is existential. Modern cosmology seems to have missed this simple axiom (displaying a belief in things that do not exist).
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    Quote Originally Posted by MeteorWayne View Post
    Quote Originally Posted by THoR View Post
    ALSO, I can logically prove every point in the cosmos is its center. Interested?
    That is already well known in cosmology...
    Googled "every point in the cosmos is its center"... and I got a list of my own sci-posts going back to 2006.
    Can you cite a source from someone else...I'd really be interested in how cosmologists couch the subject - especially if they think the universe is finite but unbounded....or open...or closed...or flat...or pretzel shaped...or if the seat was left up and Mrs scientist objected.
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    Quote Originally Posted by THoR View Post
    OF COURSE...but it requires an extraordinarily well build stopwatch with an inexhaustable source of power.
    I HAVE the proof...if you've got the time.

    Seriously, though, time is the measurement of change and change is a function of existence. Existence if not temporal...time is existential. Modern cosmology seems to have missed this simple axiom (displaying a belief in things that do not exist).
    Word salad. Would you like to try again to state what you are trying to say?
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  15. #14  
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    Quote Originally Posted by THoR View Post
    Quote Originally Posted by MeteorWayne View Post
    Quote Originally Posted by THoR View Post
    ALSO, I can logically prove every point in the cosmos is its center. Interested?
    That is already well known in cosmology...
    Googled "every point in the cosmos is its center"... and I got a list of my own sci-posts going back to 2006.
    Can you cite a source from someone else...I'd really be interested in how cosmologists couch the subject - especially if they think the universe is finite but unbounded....or open...or closed...or flat...or pretzel shaped...or if the seat was left up and Mrs scientist objected.
    Uhhh, you must have worded your google search badly. It's a foundation of the big bang theory and is explained in so many reputable places, it's impossible to list them all.

    I'll try and find a basic one for you...
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  16. #15 How Long Will the Universe Last? 
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    The Universe will end. At some future point all the energy available will be lost to entropy and the Universe will achieve what is called 'heat-death'. There will be no usable energy. At that point, nothing else will happen at any level and time will cease. End of Universe.

    I've read various estimates on how long this will be. All agree it will be longer than the Universe has existed so far. The best estimate (guess?) for existance thus far is around 13.75 billion years, give or take an eon. If I'm recalling correctly - the exactitude of the figure doesn't seem to be all that important to me - is between twenty and thirty billion more years. (And I could remember that wrong as well, but it's a looong time yet.)

    The estimate of time left is based on the amount of energy calculated/deduced/perceived/guessed in the Universe and the observed rate of entropy. Also, one notes all the astronomers/cosmologists making such predictions - with the exception of THoR, the god of blunder - are very careful to label these pronouncements as 'estimates' and acknowledge their tenuous basis for calculation.

    In any event, I will not live to see it in this body. For that matter, nor will anyone else. The decay of the energy level in the Universe will render life impossible some time prior to the final end. Icewindigo's computer and Matrix program will run out of power long before the end, but might conceivably survive physical life forms.

    Sadly, Douglas Adams' Restaurant at the End of the Universe will not exist. There may be a Restaurant at the End of Sentient Beings, I suppose. But I doubt it would be a fun place.
    The universe is a real place. However, you can't see it, you have to imagine it. Like it or not, God designed, built and sustains the Universe. Deal with it.
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    I believe it's MUCH longer than another 20 or 30 billion years, in the order of 10^100 years .
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